The precision and reliability of etap axs now at a whole new level. The rival etap axs front derailleur is optimized for x-range chainrings and uses yaw technology so there’s no need for trim. - wireless electronic etap shift logic for intuitive shifting easy setup and reliability - axs enabled for easy personalization - crisp and accurate front shifts - sram yaw trimless cage technology optimized for use with 46/33t or 48/35tx-range chainrings - designed for standard chainline etap axs cranks - battery is not included